This is neither a reflection on Albert, nor of this site. Sites change as members shift interest, new members join and the topics change to a degree as the "technology" changes. I’ve seen this on some of the car boards on which I used to participate. Some of it is a reflection of a "healthy" forum that is keeping pace with topics of interest to the readership. For example, I would bet there’s much more discussion now than there was 10 years ago of DACs, and digital taken to a serious level than there used to be (perhaps I’m wrong and this is a reflection of my own biases since I’ve only recently ’evolved’ into using digital more seriously). And there does seem to be a raft of new members here who are very active and contribute. I think that's good.
As to Albert, write to him and say hello! He’s still very active in the hobby. I’m not sure he has time to post on other fora- I don’t see him elsewhere on the web but I can’t speak for him- ask him!